#ifndef LIPSYNC_TOOLS_H
#define LIPSYNC_TOOLS_H

#include <functional>
#include <memory>

#define UNUSED(x) ((void)(x))

template<typename T>
using lambda_unique_ptr = std::unique_ptr<T, std::function<void(T*)>>;

// The following definitions are taken from https://github.com/Microsoft/GSL.

// final_act allows you to ensure something gets run at the end of a scope
template <class F>
class final_act
{
public:
	explicit final_act(F f) noexcept : f_(std::move(f)), invoke_(true) {}

	final_act(final_act&& other) noexcept : f_(std::move(other.f_)), invoke_(other.invoke_) { other.invoke_ = false; }
	final_act(const final_act&) = delete;
	final_act& operator=(const final_act&) = delete;

	~final_act() noexcept { if (invoke_) f_(); }

private:
	F f_;
	bool invoke_;
};

// finally() - convenience function to generate a final_act
template <class F>
final_act<F> finally(const F &f) noexcept { return final_act<F>(f); }

template <class F>
final_act<F> finally(F &&f) noexcept { return final_act<F>(std::forward<F>(f)); }

#endif //LIPSYNC_TOOLS_H